A brand of Watts 1/2 LFN55B-M1 Water Technologies, Watts Regulator Company is an innovative manufacturer of water quality products for your plumbing needs. The Watts Valve, 1/2" NPT Threaded Female Inlet x NPT Female Outlet Water Pressure Regulator - Lead Free is used in commercial and residential applications to reduce incoming water pressure to a sensible level for protection of plumbing system components and to reduce water consumption. It consists of a bronze body construction integral stainless steel strainer, thermoplastic seat, bronze sealed spring cage for waterworks pit installations and thermal expansion bypass. Available with NPT threaded female inlet x NPT female outlet connections. Maximum Working Pressure: 400psi (27.6 bar), Adjustable Reduced Pressure Range: 25 to 75psi (172 to 517 kPa), Standard Pressure Setting: 50psi (345 kPa). All parts are quickly and easily serviceable without removing the valve from the line. The standard bypass feature permits the flow of water back through the valve into the main when pressures, due to thermal expansion on the outlet side of the valve, exceed the pressure in the main supply.